CODEWITHSUNDEEP
mavenjaxb2xjcjaxb2-maven-pluginxjb
Neel
Neel

Reputation: 2100

Using XJB with jaxb2-maven-plugin

I have a multi-module maven project in the following structure:

root-module
    |__module-a
    |    |__src
    |        |__main
    |            |__xsd
    |            |    |__my.xsd
    |            |__xjb
    |                 |__my.xjb
    |__module-b

The POM for root module simply aggregates module a and b (among other things):

<project>
  <artifactId>root-module</artifactId>
  <packaging>pom</packaging>
  <modules>
    <module>module-a</module>
    <module>module-b</module>
  </modules>
</project>

And the POM for module a is as follows (among other things):

<project>
  <parent>
    <artifactId>root-module</artifactId>
  </parent>
  <artifactId>module-a</artifactId>
  <properties>
    <my-definitions.xsd>${basedir}/src/main/xsd/my.xsd</my-definitions.xsd>
    <my-bindings.xjb>${basedir}/src/main/xjb/my.xjb</my-bindings.xjb>
    <my.output>${basedir}/target/generated-sources/jaxb/my</my.output>
  </properties>
  <build>
    <plugins>
        <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>jaxb2-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <id>generate-my-classes</id>
                        <phase>generate-sources</phase>
                        <goals><goal>xjc</goal></goals>
                        <configuration>
                            <sources><source>${my-definitions.xsd}</source></sources>
                            <xjbSources><xjbSource>${my-bindings.xjb}</xjbSource></xjbSources>
                            <outputDirectory>${my.output}</outputDirectory>
                        </configuration>
                    </execution>
                </executions>
        </plugin>
    </plugins>
  </build>
</project>

So when I run mvn at module-a, everything works fine and the build succeeds. But when I run it at root-module, I get an exception from the XJC plugin where it tries to find the bindings file under the root-module:

com.sun.istack.SAXParseException2; IOException thrown when processing "file:/home/root-module/src/main/xjb/my.xjb". Exception: java.io.FileNotFoundException: /home/root-module/src/main/xjb/my.xjb (The system cannot find the path specified).

What is interesting is, it is able to locate the XSD correctly:

[ERROR] Failed to execute goal org.codehaus.mojo:jaxb2-maven-plugin:2.1:xjc (generate-my-classe) on project module-a:
[ERROR] +=================== [XJC Error]
[ERROR] |
[ERROR] | 0: file:/home/root-module/module-a/src/main/xsd/my.xsd
[ERROR] |
[ERROR] +=================== [End XJC Error]

Specifics of my build system:

Using Maven 3.2.5

<groupId>org.codehaus.mojo</groupId>
<artifactId>jaxb2-maven-plugin</artifactId>
<version>2.1</version>

Referring JAXB2 Maven plugin documentation from here. Also searched few related questions on SO, but they do not explain my specific problem anywhere.

UPDATE: Looks like an open issue. Keeping the thread open in case there is a workaround.

Upvotes: 4

Views: 14207

Answers (3)

Anderson
Anderson

Reputation: 2748

Not answering your question, but for those guys jumped from Google here.

For version 3.2.0. It seems NOT support xjbSources and xjb file is just ignored. I've removed this line and moved it to the default location src/main/xjb to make xjb work.

 <xjbSources><xjbSource>${my-bindings.xjb}</xjbSource></xjbSources>

Upvotes: 0

kastmaster
kastmaster

Reputation: 389

Updating to version 2.2 of the plugin appears to work.

  <groupId>org.codehaus.mojo</groupId>
  <artifactId>jaxb2-maven-plugin</artifactId>
  <version>2.2</version>

I had the same problem when using version 2.1 of the plugin. Simply changing to version 2.2 fixed the issue.

Upvotes: 3

Neel
Neel

Reputation: 2100

Until a plugin resolution is available, I am using the following ant-run hack:

    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-antrun-plugin</artifactId>
        <executions>
            <execution>
                <id>generate-my-classes</id>
                <phase>generate-sources</phase>
                <goals>
                  <goal>run</goal>
                </goals>
                <configuration>
                    <tasks>
                        <mkdir dir="${project.build.directory}/generated-sources/jaxb/my" />
                        <exec executable="${env.JAVA_HOME}/bin/xjc.exe" dir="${project.basedir}/src/main/xsd">
                            <arg value="-p" />
                            <arg value="my.package" />
                            <arg value="-b" />
                            <arg value="${project.basedir}/src/main/xjb" />
                            <arg value="-d" />
                            <arg value="${project.build.directory}/generated-sources/jaxb" />
                            <arg value="." />
                        </exec>
                    </tasks>
                </configuration>
            </execution>
        </executions>
    </plugin>

UPDATES:

Discussion on Github.

Considering Apache CXF Utils as an alternative.

Upvotes: 0

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